Penny Marshall was typically self-effacing whenever her brother, the late filmmaker Garry Marshall, proudly boasted that his sister was the first female director to direct a $100 million box-office hit.

Elon Musk unveiled his underground transportation tunnel on Tuesday, allowing reporters and invited guests to take some of the first rides in the revolutionary albeit bumpy subterranean tube — the tech entrepreneur's answer to what he calls "soul-destroying traffic."

Nearly two dozen consumer, privacy and public health groups are urging U.S. regulators to investigate whether children are being endangered by deceptive apps in Google's app store for smartphones running on its Android software.